Hot-atr furnace



FFTQE.

JOHN CARTON AND JOS. BRIGGS, OF UTIGA, NEW YORK.

HOT-AIR FURNACE.

Speccation of Letters Patent No. 11,414, dated August 1, 1854.

To all whom t may concern.'

Be it known that we, JOHN CARTON and JOSEPH BRIGGS, both of the city of Utica, in the county of Oneida and State of New York, have invented a new and Improved Mode of Covering Hot-Air Furnaces; and we hereby declare that the following is a correct description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon.

The nature of our invention consists in providing the upper part of the chamber or inclosure of the furnace with a cover made in the form of an inverted cone placed diw rectly over the furnace and having its center brought downward toward the top of the furnace; the cover thus placed, prevents any of the heat from rising above the top of the chamber and causes it to be equally distributed through the distributing pipes.

The invent-ion may be applied to any of the hot air furnaces generally used (both portable and permanent) andthe following is a description of its construction and operation.

The cover above mentioned, is represented in the annexed drawing and is marked A.

The letter b designates the outer and inner walls of the brick chamber. The edge of the cover is fixed in the brick work just above the mouths of the distributing pipes (upon which it also rests) and extends into the brick work about two inches; the cover is made to project downward and comes to a point at letter e directly; over the center of the furnace. The cover thus placed, prevents the heat from rising into the top of the chamber and causes it to spread equally from the hottest point and take a current toward the several distributing pipes through which it passes, so that no heat is lost or retained, but is more rapidly and` equal-ly distributed through the building.

The cover may be made of sheet iron or other metal, or it may be made of any substance which is a non-conductor of heat, of sufficient durability; if made of metal, the cover and the space above it, under the covering of brick at the top (see letter d) should be filled with ashes, plaster, or any ther substance which is a non-conductor of eat.

What we claim as our invention and desire to secure by Letters Patent, is-

The inverted cone or deector when placed at the top of the chamber of hot air furnaces, constructed in the manner and for the purpose set forth.

J OHN CARTON. JOSEPH BRIGGS. Witnesses:

J No. ON EIL, BENJ. F. FRENCH. 

